Aluminum Alloy MaterialOur metal business card blanks are made of aluminum alloy, which has the advantages of high strength, wear resistance, lightweight, corrosion resistance, aging resistance, good thermal conductivity, and not easy to bend, edge is smooth, double surfaces have no scratches, etc., becoming a popular choice for metal business cards.Business Card SizeWe provide 100 pieces of blank metal business cards, enough quantity to meet your daily needs. It is 0.45mm thick and measures 3.4 x 2.1 inches (86 x 54mm), the same size as a credit card, so it is compact and portable. Compared with ordinary aluminum business cards, this is thicker.Laser EngravingAluminum blank business cards are coated with coating on double sides, ready for laser engraving printing directly.